Promethazine dose for cough?

Promethazine Dosage for Cough

The typical adult dose for promethazine when used as a cough suppressant is 12.5 to 25 milligrams every 4 to 6 hours as needed [1]. For children, the dosage is determined by weight and age, and it is crucial to consult a pediatrician for the correct administration [1]. Promethazine is an antihistamine with anticholinergic and sedative properties that contribute to its effectiveness in suppressing cough reflexes [2].

How Long Does Promethazine Take to Work for a Cough?

Promethazine typically begins to relieve cough symptoms within 20 to 30 minutes after administration [1]. Its effects can last for approximately 4 to 6 hours [1].

What Are the Side Effects of Promethazine for Cough?

Common side effects associated with promethazine use include drowsiness, dizziness, blurred vision, dry mouth, and confusion [2]. More serious side effects, though less common, can include respiratory depression, especially in children, and a range of neurological symptoms [2]. It is important to avoid operating machinery or driving until you know how promethazine affects you [2].

When Should Promethazine Not Be Used for Cough?

Promethazine should not be used in individuals with a history of certain medical conditions, such as glaucoma, enlarged prostate, or breathing problems like emphysema or chronic bronchitis, without consulting a healthcare professional [2]. It is also contraindicated in very young children due to the risk of serious respiratory depression [2].

Sources:

1. https://www.drugpatentwatch.com/
2. https://www.drugpatentwatch.com/